the shoulder girdle bones and joints

Question 1

the shoulder girdle (pectoral)

Answer 1

bones, joints and muscles associated with how the. suspension of the upper limb on the trunk

Question 2

the shoulder joint

Answer 2

the area of articulation of the upper limb with its girdle

Question 3

bones of the shoulder girdle

Answer 3

scapula (shoulder bone) and clavicle (collar bone)

Question 4

joints of shoulder girdle

Answer 4

acromioclavicular joint- between clavicle and scapula (junction), sternoclavicular joint (medial joint), scapulothoracic junction- scapula articulates with the rib cage at a junction

Question 5

what is the clavicle

Answer 5

S shaped, horizontal and anterior, holds scapula and humerus to the side of the body away from the thoracic giving mechanical advantage and aiding stability

Question 6

medial end of clavicle

Answer 6

rounded, triangular cross section, articulates with sternum, convex anteriorly

Question 7

lateral end of clavicle

Answer 7

broad and flattened, concave anteriorly, articulates with acromion of scapula, called acromial end

Question 8

bony features of clavicle- deltoid tubercle

Answer 8

for attachment of anterior fibres of deltoid, on superior aspect of clavicle

Question 9

bony features of clavicle- trapezoid line and conoid tubercle

Answer 9

inferior- acromial end- for attachment of the coracoclavicular ligament

Question 10

bony features of clavicle- subclavian groove

Answer 10

depression in middle of clavicle- for the subclavian vessel

Question 11

bony features of clavicle- costal tuberosity

Answer 11

at the medial or sternal end of clavicle- for the attachment of the costoclavicular ligament

Question 12

clavicle- muscular attachment- acromial end

Answer 12

upper fibres of trapezius, anterior fibres of deltoid more posterior

Question 13

clavicle- muscular attachment- medial end

Answer 13

sternocleidomastoid, origin for pectoralis major

Question 14

3 borders of scapula

Answer 14

medial, lateral and superior

Question 15

2 angles of scapula

Answer 15

where borders meet- inferior between medial and lateral borders
superior- between medial and superior border

Question 16

2 surfaces of scapula

Answer 16

costal/ anterior, dorsal/ posterior

Question 17

3 bony processes of scapula

Answer 17

the head, acromion process, coracoid process

Question 18

bony points on scapula

Answer 18

head of scapula with short neck, spine of scapula from medial border to junction of the upper 2/5 and lower 3/5 of medial border, this is route of spine of scapula, this elongated spreads to become acromial process

Question 19

scapula bony features

Answer 19

spine and acromion process, glenoid cavity, 2 fossae- divided by spine, border and angles, coracoid process, subscapular fossa, suprascapular notch

Question 20

2 fossae of spine

Answer 20

supraspinous- above spine- supraspinous muscle

infraspinous- below spine- infraspinatus muscle

Question 21

sternum

Answer 21

manubrium- upper 2/5 of structure, sternum- majority articulation with ribs, Xiphoid process, sternal notch (jugular notch), sternal angle (angle of louis), sternoclavicular junction- articulation for clavicle

Question 22

acromioclavicular joint- type and surfaces

Answer 22

synovial plane
articular surfaces- small oval facet on lateral clavicle and medial acromion, covered by fibrocartilage, intra articular disc

Question 23

acromioclavicular joint- capsule

Answer 23

attached to articular margin, strengthened by fibres above and below (acromioclavicular ligament- binds articular surfaces together) covered with synovial membrane

Question 24

acromioclavicular joint- coracoclavicular ligament

Answer 24

2 bands trapezoid ligament- goes to the trapezoid line and conoid ligament- goes to conoid tubercle- both originate from the route of coracoid process and go verticall
sited medially and inferior to acromioclavicular join

Question 25

acromioclavicular joint- movements

Answer 25

very small glides and acromion on clavicle

Question 26

sternoclavicular joint- joint type and movements

Answer 26

synovial saddle- small gliding movements

Question 27

sternoclavicular joint- shape

Answer 27

clavicle convex- covered with fibrocartilage, manubrium sterni concave- covered in hyaline cartilage and costal cartilage of 1st rib, contains an intra articular disc

Question 28

sternoclavicular joint- capsule ligaments

Answer 28

anterior and posterior sternoclavicular ligaments, intra-clavicular ligament- draped across 2 ends of clavicles

Question 29

sternoclavicular joint- extracapsular ligament

Answer 29

costoclavicular ligament- bonds to the under surface of medial end of clavicle